List Splitter & Segmenter

Split a CSV or pasted list into equal parts, fixed-size chunks, round-robin buckets, a percentage split for A/B testing, or one file per value in a column. Shuffle and dedupe first if you need to.

🔒 Your list never leaves your browser. No upload, no server, no tracking.

List & method

Drag a .csv / .tsv / .txt file here, or .

First row is a header

Split method

Number of parts

Options

Shuffle rows before splitting Remove duplicate rows first Include the header row in every output file

Result

Load a list, pick a method, then press Split list.